<script>
  haystack     = new Array()
  haystack[17] = "Needle"

  for (j = 0 ; j < 20 ; ++j)
  {
    if (haystack[j] == "Needle")
    {
      document.write("<br>- Found at location " + j)
      break
    }
    else document.write(j + ", ")
  }
</script>